# C1519 — Compare the two inverse heads through Shem

## Question

How do LXX and SP divide above the same completed SP Flood/MT Shem coordinate?

## Sources

```json
[]
```

## Opened utc

2026-09-29T02:30:54.979730+00:00

## Results

```json
{
  "LXX_path": [
    13136,
    5436,
    536
  ],
  "SP_path": [
    14116,
    5436,
    536
  ],
  "upper_legs": [
    7700,
    8680
  ],
  "upper_units70": [
    110,
    124
  ],
  "shared_lower": 4900,
  "totals": [
    12600,
    13580
  ],
  "head_gain_units": 14
}
```

## Finding

The paths are110+70 and124+70 units. Their14-unit difference is the Covenant Key’s980-year gain, while5436 remains a shared comparison point.

## Reassessment

Test whether that shared comparison point is also fixed by the Key itself.

## Checks

```json
{}
```

## Closed utc

2026-09-29T02:30:54.979901+00:00

## Record provenance

Exact record hash: `c33094deb3543e7dd8ca23a1134194aced96af93f29254e08fd7c859dc7164a1`

Source journal: `Research_Cycles/C1483_C1582/c1483_c1582/journal.json`